Macbook Air RAM

Discussion in 'MacBook Air' started by Burnsey, Oct 24, 2010.

  1. Burnsey macrumors 6502a

    Joined:
    Jul 1, 2007
    Location:
    Canada
    #1
    I'm considering buying the base 13 inch MBA to replace my aging MBP but had a question regarding RAM. The base 13 comes with 2GB, which is the same as in my MBP. When my MBP runs out of RAM it accesses the disk, which cripples performance. Wouldn't the flash drive on the Air resolve this? In other words wouldn't it theoretically have 128GB of RAM?

    Is it worth the extra $100 to get the 4GB?
     
  2. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #2
    Flash based storage will greatly increase the speed, so in effect yes (I guess).

    Edit* Of couse actual RAM is much faster.
     
  3. Fuchal macrumors 68020

    Joined:
    Sep 30, 2003
    #3
    Yes and no, paging to the disk will certainly be much faster with the flash memory instead of a standard hard disk. But system RAM is much faster than the storage flash memory, up to 10 times, so performance is much better if you can keep it in RAM.
     
  4. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #4
    No, it won't have 128GB of RAM, as the flash memory is not as fast as RAM, which is multiples faster than the flash memory. Though the paging will be a bit faster in the case of having not much RAM left and the OS copying data from the RAM to the flash memory.

    Current DD3-SDRAM with 1066MHz offers up to 8533MB/s, more than 40 times faster than the flash memory.
     
  5. ProstheticHead macrumors 6502

    Joined:
    Jun 15, 2007
    Location:
    Seattle, WA
    #5
    Virtual Memory will never be as fast as true RAM.

    The flash memory should be faster than a standard HD though.
     

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